The lowest price component in this Muffler parts-list fiche is the Bolt-washer,6x12.
Some items from this specific schematic: Bolt-washer,6x12, Bolt,flange,8x40, Packing B,muffler, Nut,cap,8mm.
The Xl600r 1986 (g) Usa Muffler consists of thirty-four pieces with the Muffler Comp. being the most expensive.